Apparent Power

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apparent power

[ə′pa·rənt ′pau̇·ər]
(electricity)
The product of the root-mean-square voltage and the root-mean-square current delivered in an alternating-current circuit, no account being taken of the phase difference between voltage and current.

Apparent Power

 

a quantity that is equal to the product of the effective values of the periodic electric current I in a circuit and of the voltage U across the terminals of the circuit: S = UI. For a sinusoidal current (in complex form), = U̇İ, where is the complex effective value of the voltage and İ is the conjugate of the complex effective value of the current. S͂ = P + jQ, where P is the active power and Q is the reactive power; for inductive loads, Q > 0, and for capacitive loads, Q< 0. Apparent power is measured in volt-amperes.

References in periodicals archive ?
Recently, the applications in which AC power supplies are used have changed.
Edwards Lifesciences is recalling EV1000A, EV1000NI, EV1000CS EV100 Clinical Platforms due to the potential for fluids to leak into the AC power outlet on both the EV1000A and the EV1000NI clinical platforms, the FDA reported.
Conventionally, medium voltage AC power distribution units are widely used in heavy machinery and mining industries but due to increasing loads on data centers, many data centers operators are adopting medium voltage AC power distribution units to meet their industry-size demands.
DC power from the modules is converted to AC power at the inverter.
Obviously there's a number of factors involved in making the decision to move to AC power. "All of the original equipment was DC with motor-generator [MG] sets," Lindborg said.
The first two primarily introduce personnel safety hazards while the third significantly contributes to AC interference by continuously coupling AC power to an adjacent pipeline through the presence of an alternating magnetic field associated with operation of the high-voltage AC (HVAC) system.
Thick walls and heavy insulation make wiring for AC power expensive and time-consuming.
With its 85 to 264VAC wide input and an IEC 320/C14 AC inlet mating with different types of AC power cords, the power adapters can be used worldwide.
The recalled item was specifically the AC power cord marked "LS-15" which was distributed with Hewlett-Packard and Compaq notebook and mini notebook computers, as well as with AC adapter-powered accessories such as docking stations.
Because of this, doubly-fed induction generators can be directly connected to the AC power network and remain synchronized at all times with the AC power network.
Scientists at the University of Minnesota have developed a reactor that uses a simple high-frequency AC power supply to generate high-intensity electric fields in liquid food, which will then inactivate microorganisms.